If it is looks like Mario, but is in green, I think of him as Luigi, unless it is suppose not to be him. But, even then, I don't refer to Green Mario to that Mario. So, LGM is what I voted for. Though, the picture below could also count.

"On the tenth day of Mariomas, my Paisano gave to me...ten Attack Pieces, nine pesky fuzzies, eight red coins, seven legendary stars, six annoying partners, five Banzai Biiiiiills, four Refreshing Herbs, three hefty chortles, two little flagpoles and a Puni from the Great Boggly Woods Tree."

My answer is, I like her being playable in that game. Not so much as the trend that came after her appearance. Anyways. The reason I say the closest is that she's isn't a new playable character. That was Super Mario Run. And just like Super Mario Run, just because I like her in the game, that doesn't mean I will play as her if I get the game.